Light emitting module

Abstract

In a light emitting module, a semiconductor light emitting element emits short-wavelength visible light. A plurality of the semiconductor light emitting elements are provided side by side on the same flat surface. The light wavelength conversion member contains a first phosphor and a second phosphor, the wavelength of the light emitted after the wavelength thereof has been converted by either of the two being different from the excitation wavelength for the other. The first phosphor emits yellow light by exciting the short-wavelength visible light. The second phosphor emits blue light by exciting the short-wavelength visible light. The first phosphor does not include the wavelength range of the blue light in the excitation wavelength range thereof. The light wavelength conversion member is cured after being potted so as to integrally cover the plurality of the semiconductor light emitting elements.

1 . A light emitting module comprising:
 a light emitting element; and   a light wavelength conversion member configured to convert the wavelength of the light emitted by the light emitting element and to emit the light, wherein   the light wavelength conversion member contains a plurality of phosphors, the wavelength range of the light emitted after the wavelength thereof has been converted by one of the plurality of phosphors being different from the excitation wavelengths for the others, the light wavelength conversion member being formed to cover the light emitting element.   
     
     
         2 . The light emitting module according to  claim 1 , wherein
 a plurality of the light emitting elements are provided side by side to be spaced apart from each other, and wherein   
       the light wavelength conversion member is formed so as to integrally cover the plurality of the light emitting elements. 
     
     
         3 . The light emitting module according to  claim 2 , wherein
 the plurality of the light emitting elements are arranged on the same flat surface.   
     
     
         4 . The light emitting module according to  claim 2 , wherein
 the plurality of the light emitting elements are provided side by side on a straight line.   
     
     
         5 . The light emitting module according to  claim 2 , wherein
 the plurality of the light emitting elements are arranged in a scattered manner on a flat surface.   
     
     
         6 . A light emitting module comprising:
 a light emitting element configured to emit near-ultraviolet light or the light in the wavelength range of short-wavelength visible light; and   a light wavelength conversion member that contains both a first phosphor represented by the general formula of M 1 O 2 .a(M 2   1-z ,M 4   z )O.bM 3 X 2  (wherein, M 1  is at least one element selected from the group consisting of Si, Ge, Ti, Zr, and Sn; M 2  is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; M 3  is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; X is at least one halogen element; M 4  is at least one element in which Eu 2+  is essential selected from the group consisting of rare earth elements and Mn; and a, b, and z are respectively within the ranges of 0.1≦a≦1.3, 0.1≦b≦0.25, and 0.03≦z≦0.8), and a second phosphor that converts the wavelength of the light emitted by the light emitting element and emits blue light, the light wavelength conversion member being formed so as to cover the light emitting element.   
     
     
         7 . The light emitting module according to  claim 6 , wherein
 a plurality of the light emitting elements are provided side by side to be spaced apart from each other, and wherein   the light wavelength conversion member is formed so as to integrally cover the plurality of the light emitting elements.   
     
     
         8 . The light emitting module according to  claim 6 , wherein
 the plurality of the light emitting elements are arranged on the same flat surface.   
     
     
         9 . The light emitting module according to  claim 7 , wherein
 the plurality of the light emitting elements are provided side by side on a straight line.   
     
     
         10 . The light emitting module according to  claim 7 , wherein
 the plurality of the light emitting elements are arranged in a scattered manner on a flat surface.